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Old 03-11-2019, 01:15 PM   #183
Vintage Windmills
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Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
Re: K30 Downgrade to Cummins Project

Quote:
Originally Posted by randy500 View Post
Its definitely worth it and I think you will be very proud of it when its on the road.

I used 1st gen dodge diamond eye 4" exhaust on my truck. I cut and clocked a few straight sections, one by the trans before the transfer case and one over the axle and one tailpipe bend.
It cleared the transfer case and frame which is the tightest spot.
Nice exhaust for about $300.
You have the low mount turbo so maybe a little more work and you will need a turbo flange I think.
Thanks for the info Randy. What do you mean by turbo flange? There is a Vband groove on my turbo and the downpipe has one as well. I think I just need to figure out the sizing convention to make sure the downpipe fits the flange on the HX35W.

I got the sidemarkers for the 70 CST, they look good thank you!
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades)
67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore )
86 CHV K30 502 th400, apple red NEW
71 CHV K20 350 SM465, ochre (saved work truck)
71 CHV K20 292 SM465, white, tach, PTO, (future project)
72 CHV K20 350 350th, medium blue (project stocker)
01 CHV K2500hd crew, indigo blue

^3 dont run and the others don't see winter either
'86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649
'71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642
'72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6
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